package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;

public class ISRDemo {
    public static void main(String[] args) throws IOException {
        FileInputStream fis  = new FileInputStream("src/main/java/io/ISRDemo.java");
        InputStreamReader isr = new InputStreamReader(fis);

        int d ;
        long l = System.currentTimeMillis();
        while ((d = isr.read())!=-1){
            System.out.print((char)d);
        }
        long l1 =System.currentTimeMillis();
        System.out.println((l1-l)+"ms");
        isr.close();
    }
}
